Brass Lobster Claw Clasps, Nickel Free, Platinum ColorSize: about 10mm long, 5mm wide, 3mm thick, hole: 1mm.Look, What are these like? The pliers on lobster head? That’s right! These are lobster claw clasps. Because of unique structure philosophy, lobster claw clasps tightly buckling your jewelry, which are not easy to loosen, prevent loss and damage of your jewelry.